City vs city
Lewisville vs San Antonio, TX
Lewisville currently scores 6 points higher overall than San Antonio, with the largest gap in flood.
Use this comparison for relocation decisions, insurance shopping, and hazard-prioritized mitigation planning.
Hazard breakdown
Scores describe each city’s reference grid tile, not every property. A missing model is unavailable, not zero risk. Air quality uses an ingested EPA AirNow snapshot and may not reflect current conditions; other factors describe baseline exposure. The overall score blends different hazards and is not a probability of damage. Read the scoring methodology and sources.
Overall
Lewisville: 51/100 · San Antonio: 45/100
Lewisville is 6 points higher.
Flood
Lewisville: 55/100 · San Antonio: 31/100
Lewisville is 24 points higher.
Lewisville: FEMA NFHL flood zones: 18 features intersect this tile.
San Antonio: FEMA NFHL flood zones: 14 features intersect this tile.
Wind
Lewisville: 14/100 · San Antonio: 16/100
San Antonio is 2 points higher.
Lewisville: Wind exposure derived from ingested design wind / climatology tiles.
San Antonio: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Lewisville: 59/100 · San Antonio: 44/100
Lewisville is 15 points higher.
Lewisville: Lightning exposure derived from ingested climatology tiles.
San Antonio: Lightning exposure derived from ingested climatology tiles.
Tornado
Lewisville: 54/100 · San Antonio: 42/100
Lewisville is 12 points higher.
Lewisville: Tornado risk derived from NOAA SPC historical reports.
San Antonio: Tornado risk derived from NOAA SPC historical reports.
Hail
Lewisville: 100/100 · San Antonio: 100/100
No gap.
Lewisville: Hail risk derived from NOAA SPC historical reports.
San Antonio: Hail risk derived from NOAA SPC historical reports.
Storm surge
Lewisville: Unavailable · San Antonio: Unavailable
A score difference cannot be calculated without both sources.
Lewisville: Storm surge model is not available for this location yet.
San Antonio: Storm surge model is not available for this location yet.
Wildfire
Lewisville: 49/100 · San Antonio: 54/100
San Antonio is 5 points higher.
Lewisville: Wildfire exposure derived from ingested fire potential tiles.
San Antonio: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Lewisville: 28/100 · San Antonio: 26/100
Lewisville is 2 points higher.
Lewisville: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
San Antonio: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.